hang on a minute, tesco is hosted by O2, giffgaff is hosted by the same O2 and O2 is, well, you get the picture.in terms of network locks there is only one, O2 - it comes in several flavours but they all taste the same.you can even use O2 vouchers to top up Tesco PAYGs.so what's going on?I am now officially confused.

Yup, I can confirm the double-lock too, having just bought a Tesco Moto G.

Kind of expected it, from what others had said, and it was definitely the case. However, a £1.99 unlock code from smgreen1969 on ebay took a mere 40 mins to arrive (you buy it and then put your IMEI code in the PayPal instructions) and all was sorted out.

Still an absolute bargain, and now I have a properly unlocked phone *just* in case I ever want to move to another network - or if I need to sell.